Cool! Which class are you doing? The one I'm doing is called "The Science and Practice of Yoga" and it's run by the University of Texas, Arlington, via Edx

I had just the same problem as you! Supposed to have my forehead against the floor and sneaking a peek up to see if I'm supposed to have moved yet. I managed to get my daughter to join in a session and there I am on the floor, while the class has moved on and my daughter is up in a warrior pose and laughing at me.

In this course, they spend time showing how to do each pose - including modifications you can make if you have pain or other problems doing the pose. So, it's becoming a little easier to just follow by listening.